Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key is which of the following? An attribute that serves no purpose The same thing as a primary key Any attribute An attribute that serves as the primary key of another relation An attribute that serves no purpose The same thing as a primary key Any attribute An attribute that serves as the primary key of another relation ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A relation has which of the following properties? The order of the columns is significant. Each relation has a unique name. Each row is not unique. Attributes can have the same name within a given table. The order of the columns is significant. Each relation has a unique name. Each row is not unique. Attributes can have the same name within a given table. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key is which of the following? A derived attribute Any attribute An attribute that uniquely identifies each column An attribute that uniquely identifies each row A derived attribute Any attribute An attribute that uniquely identifies each column An attribute that uniquely identifies each row ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If a relation is in third normal form, it does not need to be in second normal form. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The relational model consists of: unorganized data. data in the form of tables. operations using non-SQL languages. data redundancy. unorganized data. data in the form of tables. operations using non-SQL languages. data redundancy. ANSWER DOWNLOAD EXAMIANS APP
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